Inductive load layman's terms, that is, the application of electromagnetic induction principle of making high-power electrical products, such as motors, compressors, relays, etc.. solar power inverter These products need when starting a ratio to maintain normal operation (about 5-7 times) required a much larger current starting current. For example, a refrigerator power consumption during normal operation of about 150 watts, its starting power up to 1000 watts or more. In addition, due to the inductive load in an instant power or disconnect the power supply, will produce back-EMF voltage, peak voltage of this inverter can withstand far greater than the voltage value, it is easy to cause instantaneous inverter overload affect the service life of the inverter. Thus, higher electrical power supply waveform such requirements.
Quasi-sine wave is also divided into several quasi-sine wave, square wave from almost the same square wave to sine wave closer rounded trapezoidal wave. We discuss here only a square wave, waveform which is currently the most commercially available high-frequency inverter can provide. Such quasi-sine with bypass pure sine wave inverter wave inverter can be used in notebook computers, televisions, modular stereos, camcorders, digital cameras, printers, various chargers, PDAs, game consoles, DVD players, mobile DVD, home for treatment, etc. , the larger the inverter output power can also be used in small electric appliances such as hair dryer, electric cup, kitchen appliances and so on. But for inductive load class appliances such as refrigerators, electric drills, etc. are not prolonged use of quasi-sine wave inverter power supply. Otherwise, it may cause damage or shorten the life expectancy of the inverter and related electrical products. If you must use an inductive load, suggested the use of reserve power larger quasi-sine wave inverter, as the site offers large peak power inverter. Here, the focus here on quasi-sine wave inverter used in TV (traditional display class) examples. TV inverter has the following three requirements: First, the TV in the boot, degaussing circuit for electricity demand has great moments, so the peak power inverter demanding. For example, a 25-inch digital TV, the power consumption under normal operating conditions is about 80 watts, while the boot instantly power up to 1450 watts. Second, because the television field frequency equal to the frequency of the AC power, the AC inverter output frequency must be accurate. Third, the inverter should not interfere with the TV. Even if it can satisfy the above three conditions, the TV when using quasi-sine wave AC power, the screen will still have a few fixed interference pattern, the color will be slightly greenish (when using the old-fashioned TV, cast the situation is more serious), but the other is no different.
Continuous output power, peak power output of some use electrical motors or tools, such as refrigerators, washing machines, drills, etc., in an instant startup requires a lot of current to drive, once started successfully, only a small current to maintain its normal operation. Therefore, the inverter, it will DC AC inverter have the concept of continuous output power and peak power output. Continuous output power that is rated output power; generally peak output power of 2 times the rated output power. It must be emphasized, some appliances, such as air conditioners, refrigerators and other start-up current is equivalent to 3-7 times its normal operating current. Therefore, only to meet peak electrical power inverter starts to work properly.
Thanks for sharing the information about this instrument.
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